I have privately tutored people for Kaplan, since I'm an instructor. My recommendation is that it is reasonably expensive, but can be useful if you make the most of it. If you post more specific information about why the MCAT is causing you trouble I could probably give you better advice. I think on the whole though, it will really come down to how motivated you are. I can tell you right now, that I thoroughly enjoy tutoring someone who actually wants to learn and enjoys spending time improving on the MCAT. That may be a lot to ask for, but that is essentially what it takes.